Method of treating paper



Sept. 22, 1931. LEADBETTER 1,824,024

METHOD OF TREATING PAPER Filed Oct. 2, 1928 7 TTDR/VE/ Patented Sept. I 22, 1931 PATENT OFFICE LOUIS L. LEADIBETTEB, OF PORTLAND, OREGON.

METHOD or rename rerun Application filed October 2, 1928.' Serial No. 809,818.

This invention relates generally to the paper making and paper waxing industry, and particularly to that portion thereof in which oil is supplied to the paper adapting it to use as fruit wrappers.

The main object of this invention is to pro' vide a wiper for paper treating rolls which will remove the oil or wax from the edges of the paper, which will subsequently be trimmed off and reprocessed.

The second object is to prevent oil-soaked trimmings from finding their way into the beating machine, and to avoid the undesirable action caused by the presence of such oil.

The third object is to effect an economy in oil, which is an important factor, owing tothe high grade of oil used in such operations.

These, and other objects, will become more apparent from the specification following as illustrated in the accompanying drawings, in which:

Figure 1 is a somewhat diagrammatic view showing a section through the oiling roll and oil tank. Figure 2 is an end elevation of the oil tank showing the lateral positions of the" wipers. Figure 3 is a perspective view of a roll of paper showing the trimmed end. Figure 4 is a fragmentary view showin the end of a roll and the irregular nature 0 this end which necessitates the trimming. Figure 5 is a fragmentary View of a piece of paper showing the oiled portion and the adjacent dry edge.

Similar numbers of reference refer to similar parts throughout the several views.

Referring in detail to the drawings, there is illustrated the usual roll of paper 10, as well as the feed roll 11 between which the paper travels while being treated with oil, usually a high grade of mineral oil 12 com tained in a tank 13 provided with a drain 14 and valve 15. Around the upper edge of the tank is a reinforcing frame 16 of angle iron or other suitable sha e. Oil is supplied to the tank through the 1nlet pipe 17 under the control of the valve 18.

The oil roll 19 is mounted within the tank 13 in a manner that its lower portion will be continually submerged in the oil 12. On one side of the frame 16 is mounted a pair of wiper arms 20, one end of which is clamped to the frame 16 by the screw 21, and the other ei d 22 is curved to fit the roll 19 and lined with felt 23, whose lower end 24 hangs downwardly to form a dripping edge on which the surplus oil finds its way back into the tank 13. It is, of course, understood that the roll 19 is now in common use and is rotated by any convenient means (not shown) for the purpose of carrying a continuous and even supply of oil to the web of paper 25 traveling over same, which paper is subsequently wound upon a core 26 to form a roll 10.

It isa well known fact that when paper is made and wound upon a roll that the edges of the roll must be trimmed, due to the fact that the edges are somewhat irregular. This trim is not wasted but is returned to the beatingvats or mixers and again finds its way to the paper machine. However, if the paper is oiled the trimmings are either wasted or cause no end of difliculty at the heaters, due to the presence of the oil. To overcome this difliculty there is provided the wiping elements above referred to, namely the felt pads 23, which are slid along the frame 16 under the control of the screw 21 until they cover that portion of the roll 10 which will ordinarily oil that portion of the web 25 which must be trimmed off, namely the portion 27.

It can be seen that no difficulty need be experienced when different widths of paper are produced, owing to the fact that the wiping pads can be shifted to correspond with the varying widths.

I claim:

A method of treating paper consisting of progressively forming said paper into a continuous web, then oiling the entire surface of said paper exce t the edges thereof, then forming said web into a roll, and then triniming the unoiled edges from said roll.

LOUIS L. LEADBETTER. 

